Self-Watering and Deep Reservoir: No more annoying wicks that clog up and stop working. The hollow legs reach into the reservoir to allow the soil itself to naturally draw up moisture, preventing its delicate system root from being constantly flooded, eliminating common problems associated with other planters and over-watering. Scientific Irrigation Design - Includes self-watering insert and side drain hole. Water can enter through the small side holes and will be stored in the reservoir where the plants will automatically absorb moisture and nutrients. Create your own garden: set of 4 indoor planters with beautiful color, bring out the beauty of your beloved plants and flowers whether they are flat or hanging. Ideal for decorating windowsill, desk, shelf, balcony, living room, kitchen, garden, office, etc. Stabilized Plastic: Intended for indoor AND outdoor use, the planters are 100% BPA free. Polypropylene planters are safe and will not leach harmful chemicals into soil or water,